Fancyheader cfoot overlaps with main content

Question

UPDATED question. Here is an MWE - finally I could produce one.

\documentclass{article}

\usepackage{geometry}
\usepackage{graphicx}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{fancyhdr}
\usepackage{longtable}
\usepackage{tabu}
\usepackage{booktabs}
\usepackage{multirow}

\usepackage{polyglossia}
\setmainlanguage{magyar}

\usepackage{lipsum}

\newcommand{\globFooter}{
    \def\alignFooter##1{\vtop{\null\hbox{##1}}}
    \cfoot{%
    \begin{tiny}
    \begin{tabular}{lll}
    \alignFooter{\includegraphics[width=2cm]{rBdytQH.png}}
    &
    \alignFooter{\begin{tabular}{lll}
    Address line 1     Address line 1 & Telephone 1     Telephone 1  & Web 1 Web 1 Web 1 Web 1 \\
    Address line 2 & Fax line    &    skype text\\
    Address line 3    &    Mobile line    &    Web 2
    \end{tabular}}
    \end{tabular}
    \end{tiny}
    }
}


\geometry{tmargin=1in,bmargin=2.5in,lmargin=0.7in,rmargin=0.7in}

\pagestyle{fancy}

\globFooter

\begin{document}

\lipsum[1-6]

Here is some more text that will position the last rows of the table near the footer: Nulla euismod, dolor vitae faucibus tincidunt, ante sem commodo massa, vitae maximus ante nisi eget magna. 

\begin{enumerate}
\item Item 1
\item Item 2

\begin{longtabu} to \linewidth {@{}X[p,l]ccrlrrc@{}} %
                              \multicolumn{6}{p{12cm}}{First row in the table} \\
                            \multicolumn{3}{l}{}
                            & \small 1.0 &  egy.  99\,999 & 99\,999 HUF &                \\
                        \multicolumn{6}{p{12cm}}{Second row in the table} \\
                        \multicolumn{3}{l}{}%
                        & 1.0 &   alk.  &                 5\,000 & 9\,999 HUF & \\
            \end{longtabu}

\end{enumerate}


\bigskip

\bigskip

\end{document}

It does not work without the image. The image is here:

It seems that the problem is related to the longtabu, because the footer overlaps with the longtabu when the bottom of the table is close to the end of the page. Here is the example overlap:

Answer 1

By default, the header and the footer are not included in the text body. But you can include them using includefoot and includehead keys of geometry package. In this case you have to adjust the footskip also. We make footskip = 25pt, otherwise a warning is issued. The solution is

\geometry{tmargin=1in,bmargin=2.5in,lmargin=0.7in,rmargin=0.7in,includefoot,footskip=25pt,showframe}

showframe is just for demo and should be removed in actual document. If you have headers, try adding includehead also and adjust the headheight(and possiblyheadsep`). Watch out for warnings, for, any incorrect settings would be notified.

\documentclass{article}

\usepackage{geometry} 
\usepackage{graphicx}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{fancyhdr}
\usepackage{longtable}
\usepackage{tabu}
\usepackage{booktabs}
\usepackage{multirow}

%\usepackage{polyglossia}
%\setmainlanguage{magyar}

\usepackage{lipsum}

\newcommand{\globFooter}{%
    \def\alignFooter##1{\vtop{\null\hbox{##1}}}
    \cfoot{%
    \begin{tiny}
    \begin{tabular}{lll}
    \alignFooter{\includegraphics[width=2cm]{example-image-a}}
    &
    \alignFooter{\begin{tabular}{lll}
    Address line 1     Address line 1 & Telephone 1     Telephone 1  & Web 1 Web 1 Web 1 Web 1 \\
    Address line 2 & Fax line    &    skype text\\
    Address line 3    &    Mobile line    &    Web 2
    \end{tabular}}
    \end{tabular}
    \end{tiny}
    }
}


\geometry{tmargin=1in,bmargin=2.5in,lmargin=0.7in,rmargin=0.7in,includefoot,footskip=25pt,showframe}

\pagestyle{fancy}

\globFooter

\begin{document}

\lipsum[1-6]

Here is some more text that will position the last rows of the table near the footer: Nulla euismod, dolor vitae faucibus tincidunt, ante sem commodo massa, vitae maximus ante nisi eget magna.

\begin{enumerate}
\item Item 1
\item Item 2

\begin{longtabu} to \linewidth {@{}X[p,l]ccrlrrc@{}} %
                              \multicolumn{6}{p{12cm}}{First row in the table} \\
                            \multicolumn{3}{l}{}
                            & \small 1.0 &  egy.  99\,999 & 99\,999 HUF &                \\
                        \multicolumn{6}{p{12cm}}{Second row in the table} \\
                        \multicolumn{3}{l}{}%
                        & 1.0 &   alk.  &                 5\,000 & 9\,999 HUF & \\
            \end{longtabu}

\end{enumerate}


\bigskip

\bigskip

\end{document}